/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 04:06:33,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 04:06:33,791 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 04:06:33,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 04:06:33,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 04:06:33,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 04:06:33,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 04:06:33,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 04:06:33,816 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 04:06:33,817 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 04:06:33,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 04:06:33,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 04:06:33,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 04:06:33,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 04:06:33,819 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 04:06:33,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 04:06:33,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 04:06:33,820 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 04:06:33,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 04:06:33,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 04:06:33,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 04:06:33,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 04:06:33,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 04:06:33,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 04:06:33,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 04:06:33,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 04:06:33,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 04:06:33,822 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 04:06:33,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 04:06:33,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 04:06:33,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 04:06:33,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 04:06:33,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:06:33,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 04:06:33,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 04:06:33,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 04:06:33,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 04:06:33,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 04:06:33,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 04:06:33,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 04:06:33,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 04:06:33,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 04:06:33,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 04:06:33,827 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 04:06:34,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 04:06:34,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 04:06:34,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 04:06:34,075 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 04:06:34,076 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 04:06:34,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-12-21 04:06:35,214 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 04:06:35,431 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 04:06:35,432 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-12-21 04:06:35,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abebd6ce/57985f925886449598f9e8911cab4cbf/FLAGc530b9454 [2023-12-21 04:06:35,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abebd6ce/57985f925886449598f9e8911cab4cbf [2023-12-21 04:06:35,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 04:06:35,450 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 04:06:35,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 04:06:35,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 04:06:35,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 04:06:35,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfbfe0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35, skipping insertion in model container [2023-12-21 04:06:35,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,485 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 04:06:35,600 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[882,895] [2023-12-21 04:06:35,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:06:35,647 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 04:06:35,662 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[882,895] [2023-12-21 04:06:35,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:06:35,689 INFO L206 MainTranslator]: Completed translation [2023-12-21 04:06:35,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35 WrapperNode [2023-12-21 04:06:35,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 04:06:35,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 04:06:35,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 04:06:35,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 04:06:35,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,729 INFO L138 Inliner]: procedures = 42, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2023-12-21 04:06:35,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 04:06:35,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 04:06:35,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 04:06:35,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 04:06:35,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,741 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,752 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 10, 1]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2023-12-21 04:06:35,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 04:06:35,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 04:06:35,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 04:06:35,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 04:06:35,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (1/1) ... [2023-12-21 04:06:35,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:06:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:35,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 04:06:35,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 04:06:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 04:06:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 04:06:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 04:06:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 04:06:35,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 04:06:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 04:06:35,924 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 04:06:35,925 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 04:06:36,083 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 04:06:36,124 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 04:06:36,125 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 04:06:36,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:06:36 BoogieIcfgContainer [2023-12-21 04:06:36,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 04:06:36,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 04:06:36,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 04:06:36,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 04:06:36,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:06:35" (1/3) ... [2023-12-21 04:06:36,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df112c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:06:36, skipping insertion in model container [2023-12-21 04:06:36,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35" (2/3) ... [2023-12-21 04:06:36,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df112c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:06:36, skipping insertion in model container [2023-12-21 04:06:36,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:06:36" (3/3) ... [2023-12-21 04:06:36,140 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-12-21 04:06:36,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 04:06:36,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 04:06:36,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 04:06:36,214 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@511a3f21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 04:06:36,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 04:06:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 04:06:36,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:36,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:36,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:36,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:36,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1212065736, now seen corresponding path program 1 times [2023-12-21 04:06:36,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:36,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374338382] [2023-12-21 04:06:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:36,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:36,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:36,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374338382] [2023-12-21 04:06:36,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374338382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:06:36,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:06:36,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 04:06:36,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650420248] [2023-12-21 04:06:36,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:06:36,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 04:06:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 04:06:36,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:06:36,532 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:36,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:36,574 INFO L93 Difference]: Finished difference Result 59 states and 93 transitions. [2023-12-21 04:06:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:06:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 04:06:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:36,581 INFO L225 Difference]: With dead ends: 59 [2023-12-21 04:06:36,581 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 04:06:36,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:06:36,586 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:36,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:06:36,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 04:06:36,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-21 04:06:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-12-21 04:06:36,611 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2023-12-21 04:06:36,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:36,611 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-12-21 04:06:36,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-12-21 04:06:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 04:06:36,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:36,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:36,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 04:06:36,613 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:36,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1222889611, now seen corresponding path program 1 times [2023-12-21 04:06:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:36,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005885572] [2023-12-21 04:06:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:36,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:36,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:36,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005885572] [2023-12-21 04:06:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005885572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:36,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058389269] [2023-12-21 04:06:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:36,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:36,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:06:36,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 04:06:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:36,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 04:06:36,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:06:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:06:36,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 04:06:36,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058389269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:06:36,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 04:06:36,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-21 04:06:36,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522439850] [2023-12-21 04:06:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:06:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 04:06:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 04:06:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 04:06:36,886 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:36,922 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2023-12-21 04:06:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:06:36,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 04:06:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:36,923 INFO L225 Difference]: With dead ends: 52 [2023-12-21 04:06:36,924 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 04:06:36,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 04:06:36,925 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:36,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:06:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 04:06:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 04:06:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2023-12-21 04:06:36,930 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 22 [2023-12-21 04:06:36,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:36,930 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2023-12-21 04:06:36,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2023-12-21 04:06:36,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 04:06:36,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:36,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:36,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 04:06:37,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:37,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:37,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2060960435, now seen corresponding path program 1 times [2023-12-21 04:06:37,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:37,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790672] [2023-12-21 04:06:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:37,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:37,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:37,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790672] [2023-12-21 04:06:37,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:37,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124952174] [2023-12-21 04:06:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:37,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:37,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:37,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:06:37,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 04:06:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:37,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 04:06:37,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:06:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:06:37,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 04:06:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124952174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:06:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 04:06:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-12-21 04:06:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905667418] [2023-12-21 04:06:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:06:37,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 04:06:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 04:06:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:06:37,416 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:37,507 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2023-12-21 04:06:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 04:06:37,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 04:06:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:37,510 INFO L225 Difference]: With dead ends: 74 [2023-12-21 04:06:37,510 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 04:06:37,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 04:06:37,514 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:37,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 85 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:06:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 04:06:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2023-12-21 04:06:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2023-12-21 04:06:37,522 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 22 [2023-12-21 04:06:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:37,522 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2023-12-21 04:06:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2023-12-21 04:06:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 04:06:37,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:37,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:37,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 04:06:37,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-21 04:06:37,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:37,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2062867059, now seen corresponding path program 1 times [2023-12-21 04:06:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:37,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787291374] [2023-12-21 04:06:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:37,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:37,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:37,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787291374] [2023-12-21 04:06:37,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787291374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:37,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449539070] [2023-12-21 04:06:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:37,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:37,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:37,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:06:37,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 04:06:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:37,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 04:06:37,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:06:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:37,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:06:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:37,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449539070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:06:37,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:06:37,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-21 04:06:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849345471] [2023-12-21 04:06:37,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:06:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 04:06:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 04:06:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:06:37,887 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:37,906 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2023-12-21 04:06:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 04:06:37,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 04:06:37,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:37,907 INFO L225 Difference]: With dead ends: 66 [2023-12-21 04:06:37,908 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 04:06:37,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:06:37,909 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:37,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:06:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 04:06:37,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-21 04:06:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2023-12-21 04:06:37,917 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 22 [2023-12-21 04:06:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:37,918 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2023-12-21 04:06:37,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2023-12-21 04:06:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 04:06:37,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:37,919 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:37,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 04:06:38,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:38,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:38,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1200544991, now seen corresponding path program 2 times [2023-12-21 04:06:38,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:38,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488500116] [2023-12-21 04:06:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:38,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:38,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:38,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488500116] [2023-12-21 04:06:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488500116] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:38,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507808190] [2023-12-21 04:06:38,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:06:38,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:38,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:38,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:06:38,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 04:06:38,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 04:06:38,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:06:38,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 04:06:38,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:06:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 04:06:38,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 04:06:38,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507808190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:06:38,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 04:06:38,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-12-21 04:06:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205824906] [2023-12-21 04:06:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:06:38,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 04:06:38,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 04:06:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-21 04:06:38,453 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:38,547 INFO L93 Difference]: Finished difference Result 113 states and 149 transitions. [2023-12-21 04:06:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 04:06:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-21 04:06:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:38,549 INFO L225 Difference]: With dead ends: 113 [2023-12-21 04:06:38,550 INFO L226 Difference]: Without dead ends: 64 [2023-12-21 04:06:38,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-21 04:06:38,551 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 62 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:38,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 106 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:06:38,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-21 04:06:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2023-12-21 04:06:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2023-12-21 04:06:38,570 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 25 [2023-12-21 04:06:38,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:38,571 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2023-12-21 04:06:38,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:38,571 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-12-21 04:06:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 04:06:38,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:38,572 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:38,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 04:06:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:38,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:38,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1901609569, now seen corresponding path program 1 times [2023-12-21 04:06:38,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:38,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477191358] [2023-12-21 04:06:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 04:06:38,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:38,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477191358] [2023-12-21 04:06:38,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477191358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:06:38,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:06:38,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 04:06:38,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434613444] [2023-12-21 04:06:38,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:06:38,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 04:06:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 04:06:38,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 04:06:38,945 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:39,024 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-12-21 04:06:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 04:06:39,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-21 04:06:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:39,028 INFO L225 Difference]: With dead ends: 77 [2023-12-21 04:06:39,028 INFO L226 Difference]: Without dead ends: 75 [2023-12-21 04:06:39,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 04:06:39,030 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:39,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 88 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:06:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-21 04:06:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2023-12-21 04:06:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 63 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2023-12-21 04:06:39,045 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 25 [2023-12-21 04:06:39,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:39,045 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2023-12-21 04:06:39,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,045 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2023-12-21 04:06:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 04:06:39,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:39,048 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:39,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 04:06:39,048 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:39,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash -520705210, now seen corresponding path program 1 times [2023-12-21 04:06:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:39,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671475766] [2023-12-21 04:06:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:39,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 04:06:39,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:39,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671475766] [2023-12-21 04:06:39,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671475766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:06:39,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:06:39,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 04:06:39,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304800188] [2023-12-21 04:06:39,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:06:39,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 04:06:39,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:39,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 04:06:39,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 04:06:39,120 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:39,147 INFO L93 Difference]: Finished difference Result 96 states and 125 transitions. [2023-12-21 04:06:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 04:06:39,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-21 04:06:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:39,149 INFO L225 Difference]: With dead ends: 96 [2023-12-21 04:06:39,149 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 04:06:39,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 04:06:39,150 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:39,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 78 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:06:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 04:06:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-21 04:06:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 67 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2023-12-21 04:06:39,164 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 27 [2023-12-21 04:06:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:39,165 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2023-12-21 04:06:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2023-12-21 04:06:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 04:06:39,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:39,169 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:39,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 04:06:39,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:39,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash 159353160, now seen corresponding path program 1 times [2023-12-21 04:06:39,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:39,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641183838] [2023-12-21 04:06:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:39,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:39,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641183838] [2023-12-21 04:06:39,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641183838] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692330800] [2023-12-21 04:06:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:39,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:39,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:06:39,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 04:06:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:39,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 04:06:39,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:06:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:39,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:06:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:06:39,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692330800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:06:39,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:06:39,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-12-21 04:06:39,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491155579] [2023-12-21 04:06:39,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:06:39,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 04:06:39,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:39,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 04:06:39,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-12-21 04:06:39,423 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:39,442 INFO L93 Difference]: Finished difference Result 133 states and 171 transitions. [2023-12-21 04:06:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 04:06:39,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-21 04:06:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:39,443 INFO L225 Difference]: With dead ends: 133 [2023-12-21 04:06:39,443 INFO L226 Difference]: Without dead ends: 71 [2023-12-21 04:06:39,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-12-21 04:06:39,445 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:39,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:06:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-21 04:06:39,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-21 04:06:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2023-12-21 04:06:39,457 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 27 [2023-12-21 04:06:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:39,457 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2023-12-21 04:06:39,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2023-12-21 04:06:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 04:06:39,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:39,459 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:39,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 04:06:39,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:39,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:39,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 790768220, now seen corresponding path program 2 times [2023-12-21 04:06:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076142051] [2023-12-21 04:06:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:39,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:39,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076142051] [2023-12-21 04:06:39,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076142051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:06:39,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:06:39,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 04:06:39,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076665217] [2023-12-21 04:06:39,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:06:39,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 04:06:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 04:06:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 04:06:39,749 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:39,805 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2023-12-21 04:06:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 04:06:39,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-21 04:06:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:39,806 INFO L225 Difference]: With dead ends: 141 [2023-12-21 04:06:39,806 INFO L226 Difference]: Without dead ends: 98 [2023-12-21 04:06:39,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-21 04:06:39,809 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:39,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 107 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:06:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-21 04:06:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 74. [2023-12-21 04:06:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 73 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2023-12-21 04:06:39,815 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 30 [2023-12-21 04:06:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:39,815 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2023-12-21 04:06:39,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2023-12-21 04:06:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 04:06:39,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:39,816 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:39,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 04:06:39,816 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:39,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash -670035066, now seen corresponding path program 1 times [2023-12-21 04:06:39,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:39,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672789464] [2023-12-21 04:06:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:39,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 04:06:39,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:39,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672789464] [2023-12-21 04:06:39,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672789464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:06:39,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:06:39,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 04:06:39,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513592259] [2023-12-21 04:06:39,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:06:39,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 04:06:39,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:39,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 04:06:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:06:39,939 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:40,077 INFO L93 Difference]: Finished difference Result 142 states and 179 transitions. [2023-12-21 04:06:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 04:06:40,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 04:06:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:40,078 INFO L225 Difference]: With dead ends: 142 [2023-12-21 04:06:40,078 INFO L226 Difference]: Without dead ends: 107 [2023-12-21 04:06:40,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-21 04:06:40,079 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 72 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:40,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 169 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:06:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-21 04:06:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2023-12-21 04:06:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 87 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2023-12-21 04:06:40,083 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 32 [2023-12-21 04:06:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:40,084 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2023-12-21 04:06:40,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2023-12-21 04:06:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 04:06:40,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:40,084 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:40,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 04:06:40,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:40,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1584945875, now seen corresponding path program 1 times [2023-12-21 04:06:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:40,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992875495] [2023-12-21 04:06:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:40,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:40,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:40,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992875495] [2023-12-21 04:06:40,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992875495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:40,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469766664] [2023-12-21 04:06:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:40,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:40,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:40,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:06:40,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 04:06:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:40,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 04:06:40,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:06:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:40,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:06:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469766664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:06:40,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:06:40,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2023-12-21 04:06:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579589066] [2023-12-21 04:06:40,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:06:40,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 04:06:40,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 04:06:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:06:40,360 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:40,436 INFO L93 Difference]: Finished difference Result 211 states and 265 transitions. [2023-12-21 04:06:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 04:06:40,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 04:06:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:40,438 INFO L225 Difference]: With dead ends: 211 [2023-12-21 04:06:40,438 INFO L226 Difference]: Without dead ends: 152 [2023-12-21 04:06:40,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-21 04:06:40,440 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 94 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:40,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 137 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:06:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-21 04:06:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2023-12-21 04:06:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2436974789915967) internal successors, (148), 119 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 148 transitions. [2023-12-21 04:06:40,447 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 148 transitions. Word has length 34 [2023-12-21 04:06:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:40,447 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 148 transitions. [2023-12-21 04:06:40,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 148 transitions. [2023-12-21 04:06:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 04:06:40,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:40,448 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:40,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 04:06:40,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:40,655 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:40,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1116402816, now seen corresponding path program 2 times [2023-12-21 04:06:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:40,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490979185] [2023-12-21 04:06:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:40,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:40,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:40,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490979185] [2023-12-21 04:06:40,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490979185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:40,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631827169] [2023-12-21 04:06:40,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:06:40,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:40,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:40,816 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:06:40,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 04:06:40,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:06:40,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:06:40,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 04:06:40,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:06:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:41,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:06:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:41,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631827169] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:06:41,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:06:41,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 20 [2023-12-21 04:06:41,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556963791] [2023-12-21 04:06:41,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:06:41,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 04:06:41,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:41,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 04:06:41,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-12-21 04:06:41,170 INFO L87 Difference]: Start difference. First operand 120 states and 148 transitions. Second operand has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:41,743 INFO L93 Difference]: Finished difference Result 412 states and 533 transitions. [2023-12-21 04:06:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 04:06:41,743 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 04:06:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:41,744 INFO L225 Difference]: With dead ends: 412 [2023-12-21 04:06:41,744 INFO L226 Difference]: Without dead ends: 215 [2023-12-21 04:06:41,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1223, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 04:06:41,746 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 473 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:41,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 475 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:06:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-21 04:06:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 141. [2023-12-21 04:06:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.25) internal successors, (175), 140 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 175 transitions. [2023-12-21 04:06:41,751 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 175 transitions. Word has length 38 [2023-12-21 04:06:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:41,751 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 175 transitions. [2023-12-21 04:06:41,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 175 transitions. [2023-12-21 04:06:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 04:06:41,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:41,752 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:41,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 04:06:41,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:41,958 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:41,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1703208830, now seen corresponding path program 1 times [2023-12-21 04:06:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:41,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444811533] [2023-12-21 04:06:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:06:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444811533] [2023-12-21 04:06:42,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444811533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:06:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107233044] [2023-12-21 04:06:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:42,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:06:42,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:06:42,096 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:06:42,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 04:06:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:06:42,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 04:06:42,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:06:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:42,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:06:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 04:06:42,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107233044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:06:42,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:06:42,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-12-21 04:06:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018911975] [2023-12-21 04:06:42,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:06:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 04:06:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:06:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 04:06:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-12-21 04:06:42,458 INFO L87 Difference]: Start difference. First operand 141 states and 175 transitions. Second operand has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:06:42,879 INFO L93 Difference]: Finished difference Result 253 states and 309 transitions. [2023-12-21 04:06:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 04:06:42,879 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 04:06:42,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:06:42,880 INFO L225 Difference]: With dead ends: 253 [2023-12-21 04:06:42,880 INFO L226 Difference]: Without dead ends: 251 [2023-12-21 04:06:42,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 04:06:42,882 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 401 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:06:42,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 312 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:06:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-21 04:06:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 163. [2023-12-21 04:06:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.2839506172839505) internal successors, (208), 162 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 208 transitions. [2023-12-21 04:06:42,888 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 208 transitions. Word has length 38 [2023-12-21 04:06:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:06:42,888 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 208 transitions. [2023-12-21 04:06:42,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:06:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 208 transitions. [2023-12-21 04:06:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 04:06:42,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:06:42,889 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:42,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 04:06:43,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 04:06:43,096 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:06:43,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:06:43,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1703149248, now seen corresponding path program 1 times [2023-12-21 04:06:43,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:06:43,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748777551] [2023-12-21 04:06:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:06:43,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:06:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-21 04:06:43,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-21 04:06:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-21 04:06:43,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-21 04:06:43,174 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-21 04:06:43,174 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 04:06:43,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 04:06:43,178 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:06:43,181 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 04:06:43,218 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-12-21 04:06:43,221 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,221 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,221 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,222 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,222 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,222 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,222 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,223 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,223 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,223 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,223 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,224 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated [2023-12-21 04:06:43,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:06:43 BoogieIcfgContainer [2023-12-21 04:06:43,237 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 04:06:43,238 INFO L158 Benchmark]: Toolchain (without parser) took 7787.37ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 166.3MB in the beginning and 147.8MB in the end (delta: 18.6MB). Peak memory consumption was 59.3MB. Max. memory is 8.0GB. [2023-12-21 04:06:43,238 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 04:06:43,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.44ms. Allocated memory is still 196.1MB. Free memory was 165.9MB in the beginning and 153.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 04:06:43,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.98ms. Allocated memory is still 196.1MB. Free memory was 153.7MB in the beginning and 151.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 04:06:43,239 INFO L158 Benchmark]: Boogie Preprocessor took 50.36ms. Allocated memory is still 196.1MB. Free memory was 151.7MB in the beginning and 149.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 04:06:43,239 INFO L158 Benchmark]: RCFGBuilder took 344.63ms. Allocated memory is still 196.1MB. Free memory was 149.2MB in the beginning and 132.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 04:06:43,240 INFO L158 Benchmark]: TraceAbstraction took 7110.11ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 131.7MB in the beginning and 147.8MB in the end (delta: -16.0MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. [2023-12-21 04:06:43,241 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 238.44ms. Allocated memory is still 196.1MB. Free memory was 165.9MB in the beginning and 153.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.98ms. Allocated memory is still 196.1MB. Free memory was 153.7MB in the beginning and 151.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.36ms. Allocated memory is still 196.1MB. Free memory was 151.7MB in the beginning and 149.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 344.63ms. Allocated memory is still 196.1MB. Free memory was 149.2MB in the beginning and 132.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 7110.11ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 131.7MB in the beginning and 147.8MB in the end (delta: -16.0MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 16]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of strncpy at line 42. Possible FailurePath: [L86] char A [2 + 2 + 4 +1]; [L87] int i = 0; VAL [A={10:0}, i=0] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=1] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=2] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=3] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=4] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=5] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=6] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=7] [L87] COND FALSE !(i<2 + 2 + 4 -1) VAL [A={10:0}, i=7] [L90] A[2 + 2 + 4] = 0 [L91] CALL parse_expression_list (A) [L60] int start=0, i=-1, j=-1; [L61] char str2[2]; VAL [i=-1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L62] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L64] i++ [L65] str[i] [L66] case 0: VAL [i=0, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L66] case 0: [L81] EXPR str[i] [L81] COND TRUE str[i] != 0 [L64] i++ [L65] str[i] [L66] case 0: VAL [i=1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L66] case 0: [L81] EXPR str[i] [L81] COND TRUE str[i] != 0 [L64] i++ [L65] str[i] [L66] case 0: VAL [i=2, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L66] case 0: [L67] EXPR str[start] [L67] (str[start] == ' ') || (str[start] == '\t') VAL [i=2, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L67] (str[start] == ' ') || (str[start] == '\t') [L67] EXPR str[start] [L67] (str[start] == ' ') || (str[start] == '\t') VAL [i=2, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L67] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L68] str[start] [L66] case 0: [L69] j = i-1 VAL [i=2, j=1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L70] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [i=2, j=1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L70] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L70] EXPR str[j] [L70] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [i=2, j=1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L70] EXPR (str[j] == ' ') || (str[j] == '\t') [L70] EXPR str[j] [L70] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [i=2, j=1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L70] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [i=2, j=1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L70] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L71] (0 < j) && (str[j] == '"') VAL [i=2, j=1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L66] case 0: [L71] EXPR str[j] [L71] (0 < j) && (str[j] == '"') VAL [i=2, j=1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L66] case 0: [L66] case 0: [L73] CALL r_strncpy(str2, str+start, j-start+1) [L42] return strncpy(dest,src,n); [L73] RET r_strncpy(str2, str+start, j-start+1) [L74] CALL __VERIFIER_assert(j - start + 1 < 2) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 14, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1222 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1222 mSDsluCounter, 1898 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1489 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1534 IncrementalHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 409 mSDtfsCounter, 1534 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 506 GetRequests, 348 SyntacticMatches, 11 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=13, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 286 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 625 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 720 ConstructedInterpolants, 0 QuantifiedInterpolants, 1953 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1166 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 26 InterpolantComputations, 8 PerfectInterpolantSequences, 342/441 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-21 04:06:43,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...